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公开(公告)号：US20210116046A1
公开(公告)日：2021-04-22
申请号：US17110055
申请日：2020-12-02
Applicant: DENSO CORPORATION
Inventor： Shinji KAWADA , Seiji TATEISHI , Hikaru OTSUKA , Hiroto INOUE , Shin KUWATA , Tetsuya ITO , Shinji HASHIMOTO
Abstract: A valve device includes a valve, a drive device, and a transmission unit. A valve changes a flow mode of refrigerant that flows in a circulation path of a refrigeration cycle device. The transmission unit includes a driving-side rotary body, a magnetic transmission member, and a driven-side rotary body. The driving-side rotary body includes multiple magnetic magnet poles in a rotational direction. The magnetic transmission member includes multiple magnetic transmission bodies which are configured to be magnetized by the magnetic magnet poles. The driven-side rotary body includes multiple magnetic magnet poles in a rotational direction. The driven-side rotary body rotates in response to a rotary motion of the multiple magnetic magnet poles of the driving-side rotary body via the magnetic transmission body. The number of the magnetic magnet poles and the number of the magnetic transmission bodies are different from each other. The rotation is transmitted from the driving-side rotary body to the driven-side rotary body via the magnetic transmission member in a non-contact manner.
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公开(公告)号：US20210080022A1
公开(公告)日：2021-03-18
申请号：US17056056
申请日：2019-06-05
Applicant: DENSO CORPORATION
Inventor： Shinji KAWADA , Seiji TATEISHI , Hikaru OTSUKA , Hiroto INOUE , Shin KUWATA , Tetsuya ITO , Shinji HASHIMOTO
IPC: F16K31/04
Abstract: A valve device includes a valve, a driving device, and a transmission unit. The valve changes a circulation mode of refrigerant flowing through a circulation path of a refrigeration cycle system. The driving device drives the valve. The driving device includes a housing and an electric driving unit as a drive source. The transmission unit is arranged in a driving transmission path extending from the electric driving unit to the valve, and changes a speed of rotation generated by driving of the electric driving unit. The transmission unit is entirely or partially arranged in the housing that is partitioned from the circulation path in a liquid-tight manner.
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公开(公告)号：US20210063067A1
公开(公告)日：2021-03-04
申请号：US17098487
申请日：2020-11-16
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Masaaki KAWAKUBO , Daiki KATO , Hiroshi MIEDA , Tetsuya ITO
Abstract: A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.
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公开(公告)号：US20200158382A1
公开(公告)日：2020-05-21
申请号：US16774250
申请日：2020-01-28
Applicant: DENSO CORPORATION
Inventor： Daiki KATO , Masaaki KAWAKUBO , Tetsuya ITO , Yasuhiro KAWASE , Ryohei SUGIMURA , Hiroshi MIEDA
Abstract: In a heat pump cycle device, a flow passage switching portion includes a flow passage switching valve body configured to open and close a cooling side flow passage. A refrigerant circulation circuit includes a low-pressure flow passage through which a low-pressure refrigerant decompressed by a first decompressor flows toward a compressor in a heating mode, and a pre-evaporator flow passage provided between the flow passage switching valve body and a refrigerant inlet of an evaporator. The flow passage switching portion causes a pre-evaporator flow passage to communicate with the low-pressure flow passage while bypassing the evaporator when a refrigerant pressure in the low-pressure flow passage is lower than a refrigerant pressure in the pre-evaporator flow passage, in the heating mode.
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公开(公告)号：US20210102635A1
公开(公告)日：2021-04-08
申请号：US17110119
申请日：2020-12-02
Applicant: DENSO CORPORATION
Inventor： Shinji KAWADA , Seiji TATEISHI , Hikaru OTSUKA , Hiroto INOUE , Shin KUWATA , Tetsuya ITO , Shinji HASHIMOTO
Abstract: A valve device includes a valve, a drive device, a magnet coupling, and a screw mechanism. The valve includes a valve body and changes a flow mode of refrigerant flowing in a circulation path of a refrigeration cycle device. The drive device includes an electric drive unit as a drive source. The magnet coupling includes a driving-side rotary body and a driven-side rotary body that are magnetically connected to each other in a non-contact manner and transmits a rotary motion of the electric drive unit from the driving-side rotary body to the driven-side rotary body. The screw mechanism converts the rotary motion of the driven-side rotary body into an axial linear motion of the valve body. The valve device is configured to change the flow mode of refrigerant by using the linear motion of the valve body caused via the magnet coupling and the screw mechanism in response to the drive of the electric drive unit.
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Patent Agency Ranking
公开(公告)号：US20200156444A1
公开(公告)日：2020-05-21
申请号：US16774469
申请日：2020-01-28
Applicant: DENSO CORPORATION
Inventor： Tetsuya ITO , Masaaki KAWAKUBO , Daiki KATO , Ryohei SUGIMURA , Yasuhiro KAWASE
Abstract: An integrated valve includes a body portion, a flow rate adjustment valve body, a flow passage switching valve body, and a shaft member. The body portion has formed therein a plurality of passages. The flow rate adjustment valve body is provided inside the body portion that adjusts a flow rate of fluid. The flow passage switching valve body is provided inside the body portion configured to switch a flow path of the predetermined fluid in the fluid circulation circuit, the flow passage switching valve body being switchable between distinct communication states. The shaft member is provided inside the body portion that interlocks the flow rate adjustment valve body and the flow passage switching valve body.
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公开(公告)号：US20210086588A1
公开(公告)日：2021-03-25
申请号：US17110584
申请日：2020-12-03
Applicant: DENSO CORPORATION
Inventor： Shinji KAWADA , Seiji TATEISHI , Hikaru OTSUKA , Hiroto INOUE , Shin KUWATA , Tetsuya ITO , Shinji HASHIMOTO
Abstract: A valve device includes a valve that changes a flow state of refrigerant flowing in a circulation path of a refrigeration cycle device, and a drive device that drives the valve. The drive device includes an electric drive unit that drives the valve, a circuit board having a control circuit that controls a drive of the electric drive unit, and a detector that detects a state of the refrigerant. The electric drive unit, the circuit board and the detector are housed in a housing. The electric drive unit, the circuit board, and the detection body are electrically connected to each other inside the housing.
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公开(公告)号：US20200232726A1
公开(公告)日：2020-07-23
申请号：US16841260
申请日：2020-04-06
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Masaaki KAWAKUBO , Daiki KATO , Tetsuya ITO , Hiroshi MIEDA
Abstract: A heat exchanger has an inflow port through which refrigerant flows, a cooling outflow port through which the refrigerant flows out during a cooling operation, and a heating outflow port through which the refrigerant flows out during a heating operation. A distance between the inflow port and the heating outflow port is shorter than a distance between the inflow port and the cooling outflow port.
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公开(公告)号：US20190128577A1
公开(公告)日：2019-05-02
申请号：US16091138
申请日：2017-04-03
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Masaaki KAWAKUBO , Daiki KATO , Hiroshi MIEDA , Tetsuya ITO
Abstract: A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.
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公开(公告)号：US20190128575A1
公开(公告)日：2019-05-02
申请号：US16091944
申请日：2017-04-03
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Hiroshi MIEDA , Masaaki KAWAKUBO , Daiki KATO , Tetsuya ITO
Abstract: A heat exchanger includes: a heat exchanging portion configured to exchange heat between a refrigerant flowing through therein and air; a liquid reservoir configured to separate a gas-liquid two-phase refrigerant flowing out of the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant, the liquid reservoir storing the liquid-phase refrigerant; and a refrigerant adjustment portion configured to adjust a flow state of the refrigerant flowing into the refrigerant adjustment portion through a refrigerant passage of the refrigeration cycle, supply the refrigerant to the heat exchanging portion and adjust an outflow state and an outflow destination of the refrigerant flowing out of the heat exchanging portion or the liquid reservoir. At least a part of the refrigerant adjustment portion is inserted into the liquid reservoir.
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